    [{:synsem {:cat :det
               :def :partitivo
               :sem {:pred :some-of
-                    :of :none}
+                    :of {:pred nil}}
               :agr {:number :plur}}}
     {:synsem {:cat :det
               :def :indef
               :sem {:pred :some-one-of
-                    :of :none}
+                    :of {:pred nil}}
               :agr {:number :sing}}}]
    "speak"
    {:english {:past "spoke"

             :def :indef
             :mass false
             :sem {:pred :a-generic-instance-of
                   :of :none}
             :agr {:number :sing}}}

   "abandon" {:synsem {:cat :verb

   "the" (map #(unify % 
                      {:synsem {:cat :det
                                :sem {:pred :definite
                                      :of {:pred nil}}
                                :def :def}})
              [{:synsem {:agr {:number :sing}}}
               {:synsem {:agr {:number :plur}}}])
